U4
Stainless steel UF water filter U4
Specifications
Stainless steel UF water filter for non-RO catalog options
| Model | U4 |
|---|---|
| Product type | Under-sink stainless steel UF water filter |
| Reference flow | 100 GPD / 90 L/H reference yield |
| Filter structure | PP + CTO + PP + UF + T33 |
| Filtration precision | 0.01um UF membrane |
| Power | Manual / non-electric |
Buying notes
Confirm these points before final quotation
UF does not reduce TDS in the same way as RO.
The stainless steel body helps U4 stand apart in a distributor catalog.
Logo and packaging requirements should be checked against quantity and model details.
RO or UF
Position U4 as a distinct non-RO product direction
U4 uses a 0.01um UF membrane and should not be marketed as an RO system. It is the appropriate comparison when a buyer specifically wants ultrafiltration.
Because UF does not reduce TDS in the same way as RO, the source-water conditions and the buyer's treatment expectations should be discussed before selection.
The manual, non-electric configuration and stainless steel body give distributors a visibly different option beside the A1, A2, and A3 RO families.
Procurement checklist
Details to confirm before requesting a U4 quotation
| Filtration goal | Confirm that UF—not reverse osmosis—is the intended treatment direction for the target market. |
|---|---|
| Installation context | Share the under-sink application and source-water information used in the buyer's product plan. |
| Catalog position | Explain whether U4 will be sold as a standalone UF line or beside RO models. |
| Private label request | Provide estimated quantity, logo, packaging, and destination-market details for review. |
Catalog comparison
Keep the model line easy for buyers to understand
| A1-600 / A1-1200 | A1 Tankless RO Series | Compare |
|---|---|---|
| A2-600 / A2-800 | A2 Smart Faucet RO Series | Compare |
| A3-400 | A3 Non-electric RO | Compare |
| U4 | U4 Stainless Steel UF | Current model direction |
Related pages
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Purey can respond faster when the first inquiry includes product direction and order context.FAQ
Common B2B buyer questions
Is U4 an RO system?
No. U4 is a stainless steel UF water filter and should be compared as a non-RO option.
Does U4 need electricity?
U4 is presented as a manual, non-electric UF product direction.
Can Purey support logo or packaging customization?
Logo and packaging discussions are available for suitable models and order quantities. Send your target model, quantity, logo file, and packaging request for review.